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From: "Christoph M. Becker" <cmbecker69@arcor.de>
Newsgroups: comp.lang.javascript
Subject: Re: Problem determining iFrame source url ...
Date: Thu, 29 Jan 2015 15:04:46 +0100
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Tim Streater wrote:

> In article <c47f984c-b560-4c77-ac64-09a08a43ada7@googlegroups.com>,
> sean mc <seanmc1217@gmail.com> wrote:
> 
>> below, it works fine....sort of... :
>> --------------------------------------------------------
>> <script type="text/javascript">
>> function ChangeSrc() {
>>  var frames = Array('splash.html', 4,
>>      'data.html');
>>  var i = 0, len = frames.length;
>>  document.getElementById('data_frame').src = frames[i++];
>>  if (i >= len) return; // no more changing
>>  setTimeout('ChangeSrc()', (frames[i++]*1000));
>> //}
>>
>> window.onload = ChangeSrc;
>> </script>
>> --------------------------------------------------------
> 
> In this function, i is declared (var i = 0), incremented (by the i++),
> and then compared with len.
> 
> I can't see why i would ever have a value other than 1 when this
> statement:
> 
>  if (i >= len) return; // no more changing
> 
> is executed. The same is true of your function. So what is the point of
> the variable i or indeed the test to compare with len ??

I guess that i is supposed to be declared outside of ChangeSrc().
However, as the code has a syntax error anyway (the function body is not
terminated with }), all bets are off -- and certainly, it does not work
fine.

-- 
Christoph M. Becker